MADISON, Wis. (AP) _ Wisconsin football coach Barry Alvarez's son faces criminal charges for breaking into a fraternity brother's room and microwaving a parrot to death.

Police have recommended charging Chad Alvarez, a senior at Wisconsin, with burglary and mistreating an animal. The 23-year-old Alvarez was arrested Friday after turning himself in.

He is expected to be arraigned Monday.

Fellow Sigma Chi fraternity members found the dead parrot in the microwave last week while it was still operating, Madison police said.

Cory Greenfield, a member of the fraternity, owned the parrot and said whoever killed ``Iago'' may have done so because he was angry about an e-mail that was passed around the fraternity house.

``He thought I was ridiculing him in front of the whole fraternity,'' Greenfield told The Capitol Times of Madison. But Greenfield said ``there's no excuse when you put somebody's pet in the microwave and fry it.''

Greenfield would not refer to Alvarez by name, but he said whoever killed his parrot had confessed to the crime.

Greenfield said the bird had a vocabulary of about 20 words.

If charged and convicted on both counts, Alvarez faces a maximum fine of $20,000 and 12-year jail sentence.

Chad Alvarez pleaded no contest in April to first offense drunken driving, according to court records.

He was released Friday on a $500 signature bond.